EPA Air · stack tests by state and year
Air-emissions stack tests in Wyoming, 2020
- 235Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every stack test below was recorded against a source in Wyoming during 2020; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Wyoming, 2020
- Sweetwater County 57
- Campbell County 36
- Carbon County 28
- Converse County 23
- Johnson County 14
- Big Horn County 13
- Sublette County 13
- Lincoln County 10
- Natrona County 8
- Albany County 6
- Uinta County 6
- Weston County 5
- Crook County 5
- Platte County 4
- Laramie County 3
Wyoming, other years
Air-emissions stack tests recorded in Wyoming, 2020
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2020-08-04 | HF SINCLAIR PARCO REFINING LLC — high-priority violation on file | SINCLAIR, Carbon, WY | Pass | State |
| 2020-08-04 | OPAL GAS PLANT (WILLIAMS FIELD SERVICES) | OPAL, Lincoln, WY | Pass | State |
| 2020-08-03 | JIM BRIDGER PLANT (PACIFICORP) — high-priority violation on file | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2020-07-31 | LARAMIE CEMENT PLANT (MOUNTAIN CEMENT CO.) — high-priority violation on file | LARAMIE, Albany, WY | Pass | State |
| 2020-07-24 | WYGEN II POWER STATION (OWNER: CHEYENNE LIGHT FUEL AND POWER) | GILLETTE, Campbell, WY | Pass | State |
| 2020-07-23 | ECHO SPRINGS GAS PLANT (WILLIAMS FIELD SERVICES) | CARBON COUNTY, Carbon, WY | Pass | State |
| 2020-07-23 | BLACKS FORK GAS PLANT (HARVEST MIDSTREAM COMPANY) | GRANGER, Sweetwater, WY | Pass | State |
| 2020-07-22 | WYGEN STATION I POWER PLANT (BLACK HILLS WYOMING) | GILLETTE, Campbell, WY | Pass | State |
| 2020-07-22 | CHEYENNE PRAIRIE GENERATING STATION (CHEYENNE LIGHT FUEL & POWER) | CHEYENNE, Laramie, WY | Pass | State |
| 2020-07-20 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2020-07-17 | HF SINCLAIR PARCO REFINING LLC — high-priority violation on file | SINCLAIR, Carbon, WY | Pass | State |
| 2020-07-16 | JONATHON LIME PLANT & LIME KILN DUST LANDFILL (PETE LIEN & SONS INC) | ALBANY COUNTY, Albany, WY | Pass | State |
| 2020-07-16 | JONATHON LIME PLANT & LIME KILN DUST LANDFILL (PETE LIEN & SONS INC) | ALBANY COUNTY, Albany, WY | Pass | State |
| 2020-07-15 | JONATHON LIME PLANT & LIME KILN DUST LANDFILL (PETE LIEN & SONS INC) | ALBANY COUNTY, Albany, WY | Pass | State |
| 2020-07-08 | HF SINCLAIR PARCO REFINING LLC — high-priority violation on file | SINCLAIR, Carbon, WY | Pass | State |
| 2020-07-08 | GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2020-07-08 | HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2020-07-02 | ROCK SPRINGS FERTILIZER COMPLEX (SIMPLOT PHOSPHATES) | ROCK SPRINGS, Sweetwater, WY | Pass | State |
| 2020-07-01 | LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2020-07-01 | ROCK SPRINGS FERTILIZER COMPLEX (SIMPLOT PHOSPHATES) | ROCK SPRINGS, Sweetwater, WY | Pass | State |
| 2020-06-26 | BIG ISLAND MINE & REFINERY (SISECAM WYOMING LLC) — high-priority violation on file | SWEETWATER COUNTY, Sweetwater, WY | Fail | State |
| 2020-06-26 | JIM BRIDGER PLANT (PACIFICORP) — high-priority violation on file | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2020-06-26 | JIM BRIDGER PLANT (PACIFICORP) — high-priority violation on file | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2020-06-24 | TABLE MOUNTAIN - CHAIR COMPRESSOR STATION (PRONGHORN MIDSTREAM LLC) | JOHNSON COUNTY, Johnson, WY | Pass | State |
| 2020-06-23 | GREEN RIVER WORKS (TATA CHEMICALS (SODA ASH) PARTNERS) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2020-06-19 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2020-06-18 | LARAMIE RIVER STATION (BASIN ELECTRIC POWER COOPERATIVE) — high-priority violation on file | WHEATLAND, Platte, WY | Pass | State |
| 2020-06-11 | BEAR DRAW-BRUIN COMPRESSOR STATION (POWDER RIVER MIDSTREAM LLC) | JOHNSON COUNTY, Johnson, WY | Pending | State |
| 2020-06-11 | BEAR DRAW-BRUIN COMPRESSOR STATION (POWDER RIVER MIDSTREAM LLC) | JOHNSON COUNTY, Johnson, WY | Pass | State |
| 2020-06-11 | OPAL GAS PLANT (WILLIAMS FIELD SERVICES) | OPAL, Lincoln, WY | Pass | State |
| 2020-06-11 | PARADISE COMPRESSOR STATION (ENTERPRISE JONAH GAS GATHERING CO) | SUBLETTE COUNTY, Sublette, WY | Pass | State |
| 2020-06-10 | OPAL GAS PLANT (WILLIAMS FIELD SERVICES) | OPAL, Lincoln, WY | Pass | State |
| 2020-06-10 | FALCON COMPRESSOR STATION (ENTERPRISE JONAH GAS GATHERING COMPANY, LLC) | SUBLETTE COUNTY, Sublette, WY | Pass | State |
| 2020-06-09 | PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY) | SUBLETTE COUNTY, Sublette, WY | Pass | State |
| 2020-06-09 | LUMAN COMPRESSOR STATION (ENTERPRISE JONAH GAS GATHERING CO) | SUBLETTE COUNTY, Sublette, WY | Pass | State |
| 2020-06-09 | BRIDGER COMPRESSOR STATION (ENTERPIRSE JONAH GAS GATHERING) | SUBLETTE COUNTY, Sublette, WY | Pass | State |
| 2020-06-08 | BIRD CANYON/COUNTY LINE COMPRESSOR STATION (ENTERPRISE JONAH GAS GATHERING CO) | SUBLETTE COUNTY, Sublette, WY | Pass | State |
| 2020-06-06 | BIG ISLAND MINE & REFINERY (SISECAM WYOMING LLC) — high-priority violation on file | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2020-06-05 | HF SINCLAIR PARCO REFINING LLC — high-priority violation on file | SINCLAIR, Carbon, WY | Pass | State |
| 2020-06-03 | MORGAN DRAW/CRENSHAW HILL (PRONGHORN MIDSTREAM LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2020-05-29 | NAUGHTON PLANT (PACIFICORP) | KEMMERER, Lincoln, WY | Pass | State |
| 2020-05-28 | HILIGHT GAS PLANT (WES POWDER RIVER HOLDINGS LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2020-05-28 | DOUGLAS COMPRESSOR STATION (WYOMING INTERSTATE GAS) | CONVERSE COUNTY, Converse, WY | Pass | State |
| 2020-05-27 | CARTER CREEK GAS PLANT (HILCORP ENERGY CO) | EVANSTON, Uinta, WY | Pass | State |
| 2020-05-22 | HF SINCLAIR PARCO REFINING LLC — high-priority violation on file | SINCLAIR, Carbon, WY | Pass | State |
| 2020-05-20 | HF SINCLAIR PARCO REFINING LLC — high-priority violation on file | SINCLAIR, Carbon, WY | Pass | State |
| 2020-05-20 | LOST CABIN GAS PLANT (CONTANGO RESOURCES, LLC.) — high-priority violation on file | LOST CABIN, Fremont, WY | Pass | State |
| 2020-05-20 | SHERIDAN MEDICAL CENTER (DEPARTMENT OF VETERANS AFFAIRS) | SHERIDAN, Sheridan, WY | Pass | State |
| 2020-05-19 | PATRICK DRAW GAS PLANT (MOUNTAIN GAS RESOURCES LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2020-05-18 | PRCC COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CONVERSE COUNTY, Converse, WY | Pass | State |
| 2020-05-18 | CHAIN LAKES I5 35 4H-8H PAD (CROWHEART ENERGY, LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2020-05-15 | GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2020-05-14 | DRY FORK STATION (BASIN ELECTRIC POWER COOP) | GILLETTE, Campbell, WY | Pass | State |
| 2020-05-13 | DOTY MOUNTAIN COMPRESSOR STATION (US REALM VENTURES) | CARBON COUNTY, Carbon, WY | Pass | State |
| 2020-05-12 | PRCC COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CONVERSE COUNTY, Converse, WY | Pass | State |
| 2020-05-11 | GREEN RIVER WORKS (TATA CHEMICALS (SODA ASH) PARTNERS) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2020-05-08 | ARLINGTON COMPRESSOR STATION (ROCKIES EXPRESS PIPELINE) | CARBON COUNTY, Carbon, WY | Pass | State |
| 2020-05-07 | MILLS COMPLEX (BLACK HILLS BENTONITE LLC) | MILLS, Natrona, WY | Pass | State |
| 2020-05-06 | LOVELL GRINDING PLANT (BENTONITE PERFORMANCE MINERALS) | LOVELL, Big Horn, WY | Pass | State |
| 2020-05-04 | SCOTT COMPRESSOR STATION (TALLGRASS MIDSTREAM, LLC) | CONVERSE COUNTY, Converse, WY | Pending | State |
| 2020-05-04 | SCOTT COMPRESSOR STATION (TALLGRASS MIDSTREAM, LLC) | CONVERSE COUNTY, Converse, WY | Pass | State |
| 2020-04-30 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2020-04-29 | MORGAN DRAW/CRENSHAW HILL (PRONGHORN MIDSTREAM LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2020-04-24 | BLACKS FORK GAS PLANT (HARVEST MIDSTREAM COMPANY) | GRANGER, Sweetwater, WY | Pass | State |
| 2020-04-22 | DOUGLAS GAS PLANT (TALLGRASS MIDSTREAM) | DOUGLAS, Converse, WY | Pass | State |
| 2020-04-22 | BRIDGER COMPRESSOR STATION (ENTERPIRSE JONAH GAS GATHERING) | SUBLETTE COUNTY, Sublette, WY | Pass | State |
| 2020-04-22 | FREWEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2020-04-22 | FREWEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2020-04-21 | ROCK SPRINGS FERTILIZER COMPLEX (SIMPLOT PHOSPHATES) | ROCK SPRINGS, Sweetwater, WY | Pass | State |
| 2020-04-17 | DOTY MOUNTAIN COMPRESSOR STATION (US REALM VENTURES) | CARBON COUNTY, Carbon, WY | Pass | State |
| 2020-04-15 | AUGUSTA-PEBBLE BEACH COMPRESSOR STATION (PRONGHORN MIDSTREAM LLC) | JOHNSON COUNTY, Johnson, WY | Pass | State |
| 2020-04-13 | ECHO SPRINGS GAS PLANT (WILLIAMS FIELD SERVICES) | CARBON COUNTY, Carbon, WY | Pass | State |
| 2020-04-11 | BIG ISLAND MINE & REFINERY (SISECAM WYOMING LLC) — high-priority violation on file | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2020-04-11 | BIG ISLAND MINE & REFINERY (SISECAM WYOMING LLC) — high-priority violation on file | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2020-04-09 | ECHO SPRINGS GAS PLANT (WILLIAMS FIELD SERVICES) | CARBON COUNTY, Carbon, WY | Pass | State |
| 2020-04-08 | COLONY PLANT (BENTONITE PERFORMANCE MINERALS) | COLONY, Crook, WY | Pass | State |
| 2020-04-07 | WELL DRAW - AURORA COMPRESSOR STATION (TALLGRASS MIDSTREAM, LLC) | CONVERSE COUNTY, Converse, WY | Pass | State |
| 2020-04-06 | COLONY PLANT (BENTONITE PERFORMANCE MINERALS) | COLONY, Crook, WY | Pass | State |
| 2020-04-06 | CASPER COMPRESSOR STATION (TALLGRASS INTERSTATE GAS TRANSMISSION) | NATRONA COUNTY, Natrona, WY | Pass | State |
| 2020-04-02 | HILIGHT GAS PLANT (WES POWDER RIVER HOLDINGS LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2020-04-01 | COLONY PLANT (BENTONITE PERFORMANCE MINERALS) | COLONY, Crook, WY | Pass | State |
| 2020-03-30 | HF SINCLAIR PARCO REFINING LLC — high-priority violation on file | SINCLAIR, Carbon, WY | Pass | State |
| 2020-03-27 | BIRD CANYON/COUNTY LINE COMPRESSOR STATION (ENTERPRISE JONAH GAS GATHERING CO) | SUBLETTE COUNTY, Sublette, WY | Pass | State |
| 2020-03-26 | LOVELL GRINDING PLANT (BENTONITE PERFORMANCE MINERALS) | LOVELL, Big Horn, WY | Pass | State |
| 2020-03-26 | LOVELL GRINDING PLANT (BENTONITE PERFORMANCE MINERALS) | LOVELL, Big Horn, WY | Pass | State |
| 2020-03-26 | LOVELL GRINDING PLANT (BENTONITE PERFORMANCE MINERALS) | LOVELL, Big Horn, WY | Pass | State |
| 2020-03-26 | LOVELL GRINDING PLANT (BENTONITE PERFORMANCE MINERALS) | LOVELL, Big Horn, WY | Fail | State |
| 2020-03-25 | LARAMIE RIVER STATION (BASIN ELECTRIC POWER COOPERATIVE) — high-priority violation on file | WHEATLAND, Platte, WY | Pass | State |
| 2020-03-24 | ECHO SPRINGS GAS PLANT (WILLIAMS FIELD SERVICES) | CARBON COUNTY, Carbon, WY | Pass | State |
| 2020-03-24 | ECHO SPRINGS GAS PLANT (WILLIAMS FIELD SERVICES) | CARBON COUNTY, Carbon, WY | Pass | State |
| 2020-03-19 | SHUTE CREEK TREATING FACILITY (EXXON MOBIL CORP) | LINCOLN COUNTY, Lincoln, WY | Pass | State |
| 2020-03-18 | MORGAN DRAW/CRENSHAW HILL (PRONGHORN MIDSTREAM LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2020-03-18 | MORGAN DRAW/CRENSHAW HILL (PRONGHORN MIDSTREAM LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2020-03-18 | SHUTE CREEK TREATING FACILITY (EXXON MOBIL CORP) | LINCOLN COUNTY, Lincoln, WY | Pass | State |
| 2020-03-18 | PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY) | SUBLETTE COUNTY, Sublette, WY | Pass | State |
| 2020-03-18 | RINER STATION (SOUTHERN STAR CENTRAL GAS PIPELINE) | SWEETWATER COUNTY, Sweetwater, WY | Pending | State |
| 2020-03-12 | HULETT MILL (NEIMAN SAWMILL) | SUNDANCE, Crook, WY | Pass | State |
| 2020-03-12 | ROCK SPRINGS FERTILIZER COMPLEX (SIMPLOT PHOSPHATES) | ROCK SPRINGS, Sweetwater, WY | Pass | State |
| 2020-03-05 | HF SINCLAIR PARCO REFINING LLC — high-priority violation on file | SINCLAIR, Carbon, WY | Pass | State |
| 2020-03-04 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.